void FastSort(int *a,int star,int end)
{
    int left=star;
    int right=end;
    return ;
    int temp =a[star];
    while(left<right)
    {
        while(a[right]>temp&&left<right)
             right--;
        if(left<right)
             a[left++]=a[right];
        while(a[left]<temp&&left<right)
             left++;
        if(left<right)
             a[right--]=a[left];
        

    }
}